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bug #1222: fix compilation in AutoDiffScalar and add respective unit test

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This commit is contained in:
Gael Guennebaud
2016-05-18 16:00:11 +02:00
parent 5a71eb5985
commit 448d9d943c
2 changed files with 11 additions and 2 deletions
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11
unsupported/test/autodiff.cpp
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@@ -207,7 +207,14 @@ void test_autodiff_hessian()
VERIFY_IS_APPROX(y.derivatives()(1).derivatives(), -std::sin(s1*s3+s2*s4)*Vector2d(s3*s4,s4*s4));
}
double bug_1222() {
typedef Eigen::AutoDiffScalar<Eigen::Vector3d> AD;
const double _cv1_3 = 1.0;
const AD chi_3 = 1.0;
// this line did not work, because operator+ returns ADS<DerType&>, which then cannot be converted to ADS<DerType>
const AD denom = chi_3 + _cv1_3;
return denom.value();
}
void test_autodiff()
{
@@ -217,5 +224,7 @@ void test_autodiff()
CALL_SUBTEST_3( test_autodiff_jacobian<1>() );
CALL_SUBTEST_4( test_autodiff_hessian<1>() );
}
bug_1222();
}